Fixed #429 - Add Recipe for disk integration

recipes/disk.rb

@@ -0,0 +1,35 @@
+#
+# Cookbook Name: datadog
+# Recipe: disk
+#
+# This recipe exists to apply (optional) configuration to the disk integration
+# This recipe does not need to be included to use the disk integration,
+# but it allows you to override some defaults that the disk integration
+# provides.
+# For more information on the integration itself, see:
+# https://docs.datadoghq.com/integrations/disk/
+
+include_recipe 'datadog::dd-agent'
+
+# example configuration:
+# node['datadog']['disk']['instances'] = [
+#   {
+#     'use_mount' => true,
+#     'excluded_filesystems' => [
+#       'tmpfs'
+#     ],
+#     'excluded_disks' => [
+#       '/dev/sda1',
+#       '/dev/sda2'
+#     ],
+#     'excluded_disk_re' => '/dev/sde.*',
+#     'tag_by_filesystem' => false,
+#     'excluded_mountpoint_re' => '/mnt/somebody-elses-problem.*',
+#     'all_partitions' => false
+#   }
+# ]
+
+datadog_monitor 'disk' do
+  instances node['datadog']['disk']['instances']
+  init_config nil
+end

spec/integrations/disk_spec.rb

@@ -0,0 +1,55 @@
+describe 'datadog::disk' do
+  expected_yaml = <<-EOF
+  init_config: {}
+
+  instances:
+    - use_mount: true
+      excluded_filesystems:
+        - tmpfs
+      excluded_disks:
+        - /dev/sda1
+        - /dev/sda2
+      excluded_disk_re: '/dev/sde.*'
+      tag_by_filesystem: false
+      excluded_mountpoint_re: '/mnt/somebody-elses-problem.*'
+      all_partitions: false
+  EOF
+
+  cached(:chef_run) do
+    ChefSpec::SoloRunner.new(step_into: ['datadog_monitor']) do |node|
+      node.automatic['languages'] = { 'python' => { 'version' => '2.7.2' } }
+      node.set['datadog'] = {
+        api_key: 'someapikey',
+        disk: {
+          instances: [
+            {
+              use_mount: true,
+              excluded_filesystems: ['tmpfs'],
+              excluded_disks: ['/dev/sda1', '/dev/sda2'],
+              excluded_disk_re: '/dev/sde.*',
+              tag_by_filesystem: false,
+              excluded_mountpoint_re: '/mnt/somebody-elses-problem.*',
+              all_partitions: false
+            }
+          ]
+        }
+      }
+    end.converge(described_recipe)
+  end
+
+  subject { chef_run }
+
+  it_behaves_like 'datadog-agent'
+
+  it { is_expected.to include_recipe('datadog::dd-agent') }
+
+  it { is_expected.to add_datadog_monitor('disk') }
+
+  it 'renders expected YAML config file' do
+    expect(chef_run).to render_file('/etc/dd-agent/conf.d/disk.yaml').with_content { |content|
+      expect(YAML.safe_load(content).to_json).to be_json_eql(
+        YAML.safe_load(expected_yaml).to_json
+      )
+    }
+  end
+end

templates/default/disk.yaml.erb

@@ -0,0 +1,3 @@
+# Generated by Chef, local modifications will be overwritten
+
+<%= JSON.parse(({ 'instances' => @instances, 'init_config' => @init_config }).to_json).to_yaml %>